Port from GConf to GSettings
Summary:
CCBUG: 386665
As discussed in bug 386665 GConf is deprecated and needs to be replaced by GSettings to keep features enabled.
Question: Do we need GConf as a fallback for PA versions without module-gsettings?
Test Plan:
Checkboxes in Advanced tab are enabled again.
Changed settings are shown in dconf-editor and vice versa.
Combine output checkbox shows/hides combined sink in applet
Reviewers: drosca, davidedmundson
Reviewed By: drosca
Subscribers: pino, lbeltrame, evpokp, rikmills, broulik, asturmlechner, plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D14147